Recently I made an interesting discovery while running – a simple act that made a dramatic difference and helped carry me through the most challenging segments of long distance runs: smiling. This inspired me to embark on a journey that took me through neuroscience, anthropology, sociality and psychology to uncover the untapped powers of the smile.

I started my exploratory journey in California, with an intriguing UC Berkeley 30-year longitudinal study that examined the smiles of students in an old yearbook, and measured their well-being and success throughout their lives. By measuring the smiles in the photographs the researchers were able to predict: how fulfilling and long lasting their marriages would be, how highly they would score on standardized tests of well-being and general happiness, and how inspiring they would be to others. The widest smilers consistently ranked highest in all of the above.

Even more surprising was a 2010 Wayne State University research project that examined the baseball cards photos of Major League players in 1952. The study found that the span of a player’s smile could actually predict the span of his life! Players who didn’t smile in their pictures lived an average of only 72.9 years, while players with […]